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Approved for public release by AR RF/Microwave Instrumentation 030612
160 School House Road Souderton, PA 18964-9990 • 215-723-8181 • www.ar-worldwide.com Page 1 of 1
Model DC7144A, AM1
DC7144, M1 through M3
Dual Directional Coupler
400 Watts CW
0.7GHz–4.2GHz
The Model DC7144A is a dual directional coupler with excellent frequency range and power handling capability. The
wide range assures flexibility in coupling medium power amplifiers to oscilloscopes, voltmeters, power meters, spectrum
analyzers and other measuring instruments. The dual directional design allows the user to monitor both forward and
reflected power, a much needed characteristic in RF susceptibility testing for amplifier overdrive protection, field control
and load protection. Low insertion loss allows efficient coupling to the load.
The Model DC7144A is uniquely suited for use with our “S” series microwave power amplifiers, other amplifiers operating
within this frequency and power range, and our PM2003 power meter.
SPECIFICATIONS
FREQUENCY RANGE ............................................ 0.7–4.2GHz
POWER (Maximum Watts) ..................................... 400 Watts CW
4K Watts Peak, @ 5% duty cycle,
30

sec pulse
COUPLING FACTOR ............................................ 40 dB  1.3 dB (includes flatness)
FLATNESS ............................................................  0.8dB
DIRECTIVITY
Typical
........................................................... 19 dB
Minimum ....................................................... 15 dB
INSERTION LOSS ................................................ 0.4 dB maximum
IMPEDANCE (Main Line) ....................................... 50 ohms, VSWR 1.25:1 maximum
CONNECTORS .................................................... See Model Configuration
WEIGHT ............................................................... 0.24 kg (.525 lbs)
SIZE (WxHxD) ....................................................... 2.35 x 5.84 x 19.0 cm (0.925 x 2.3 x 7.48 in)
EXPORT CLASSIFICATION ..................................... EAR99
MODEL CONFIGURATION
Model Number Main Line
J1/J2 Coupled Connector
J3/J4
DC7144A N(M)/N(F) N(F)/N(F)
DC7144AM1* N(M)/N(F) N(F)/N(F)
DC7144 N(F)/N(F) SMA(F)/SMA(F)
DC7144M1 N(F)(NF) N(F)/N(F)
DC7144M2* N(F)(NF) SMA(F)/SMA(F)
DC7144M3* N(F)(NF) N(F)/N(F)
*Uses A2LA Calibration